Neutron sub-library - TENDL-2019

Tabulated residual cross sections

Reaction #	¹⁷⁰Er(n,x)¹²⁷Ba	¹⁷⁰Er(n,x)¹²⁸Ba	¹⁷⁰Er(n,x)¹²⁹Ba	¹⁷⁰Er(n,x)¹³⁰Ba	¹⁷⁰Er(n,x)¹³¹Ba	¹⁷⁰Er(n,x)¹³²Ba

Reaction #	¹⁷⁰Er(n,x)¹³³Ba	¹⁷⁰Er(n,x)¹³⁴Ba	¹⁷⁰Er(n,x)¹³⁵Ba	¹⁷⁰Er(n,x)¹³⁶Ba	¹⁷⁰Er(n,x)¹³⁷Ba	¹⁷⁰Er(n,x)¹³⁸Ba

Reaction #	¹⁷⁰Er(n,x)¹³⁹Ba	¹⁷⁰Er(n,x)¹⁴⁰Ba	¹⁷⁰Er(n,x)¹⁴¹Ba	¹⁷⁰Er(n,x)¹⁴²Ba	¹⁷⁰Er(n,x)¹⁴³Ba	¹⁷⁰Er(n,x)¹⁴⁴Ba

Reaction #	¹⁷⁰Er(n,x)¹²⁸La	¹⁷⁰Er(n,x)¹²⁹La	¹⁷⁰Er(n,x)¹³⁰La	¹⁷⁰Er(n,x)¹³¹La	¹⁷⁰Er(n,x)¹³²La	¹⁷⁰Er(n,x)¹³³La

Reaction #	¹⁷⁰Er(n,x)¹³⁴La	¹⁷⁰Er(n,x)¹³⁵La	¹⁷⁰Er(n,x)¹³⁶La	¹⁷⁰Er(n,x)¹³⁷La	¹⁷⁰Er(n,x)¹³⁸La	¹⁷⁰Er(n,x)¹³⁹La

Reaction #	¹⁷⁰Er(n,x)¹⁴⁰La	¹⁷⁰Er(n,x)¹⁴¹La	¹⁷⁰Er(n,x)¹⁴²La	¹⁷⁰Er(n,x)¹⁴³La	¹⁷⁰Er(n,x)¹⁴⁴La	¹⁷⁰Er(n,x)¹⁴⁵La

Reaction #	¹⁷⁰Er(n,x)¹⁴⁶La	¹⁷⁰Er(n,x)¹²⁹Ce	¹⁷⁰Er(n,x)¹³⁰Ce	¹⁷⁰Er(n,x)¹³¹Ce	¹⁷⁰Er(n,x)¹³²Ce	¹⁷⁰Er(n,x)¹³³Ce

Reaction #	¹⁷⁰Er(n,x)¹³⁴Ce	¹⁷⁰Er(n,x)¹³⁵Ce	¹⁷⁰Er(n,x)¹³⁶Ce	¹⁷⁰Er(n,x)¹³⁷Ce	¹⁷⁰Er(n,x)¹³⁸Ce	¹⁷⁰Er(n,x)¹³⁹Ce

Reaction #	¹⁷⁰Er(n,x)¹⁴⁰Ce	¹⁷⁰Er(n,x)¹⁴¹Ce	¹⁷⁰Er(n,x)¹⁴²Ce	¹⁷⁰Er(n,x)¹⁴³Ce	¹⁷⁰Er(n,x)¹⁴⁴Ce	¹⁷⁰Er(n,x)¹⁴⁵Ce

Reaction #	¹⁷⁰Er(n,x)¹⁴⁶Ce	¹⁷⁰Er(n,x)¹⁴⁷Ce	¹⁷⁰Er(n,x)¹⁴⁸Ce	¹⁷⁰Er(n,x)¹⁴⁹Ce	¹⁷⁰Er(n,x)¹⁵⁰Ce	¹⁷⁰Er(n,x)¹⁵¹Ce

Reaction #	¹⁷⁰Er(n,x)¹³⁰Pr	¹⁷⁰Er(n,x)¹³¹Pr	¹⁷⁰Er(n,x)¹³²Pr	¹⁷⁰Er(n,x)¹³³Pr	¹⁷⁰Er(n,x)¹³⁴Pr	¹⁷⁰Er(n,x)¹³⁵Pr

Reaction #	¹⁷⁰Er(n,x)¹³⁶Pr	¹⁷⁰Er(n,x)¹³⁷Pr	¹⁷⁰Er(n,x)¹³⁸Pr	¹⁷⁰Er(n,x)¹³⁹Pr	¹⁷⁰Er(n,x)¹⁴⁰Pr	¹⁷⁰Er(n,x)¹⁴¹Pr

Reaction #	¹⁷⁰Er(n,x)¹⁴²Pr	¹⁷⁰Er(n,x)¹⁴³Pr	¹⁷⁰Er(n,x)¹⁴⁴Pr	¹⁷⁰Er(n,x)¹⁴⁵Pr	¹⁷⁰Er(n,x)¹⁴⁶Pr	¹⁷⁰Er(n,x)¹⁴⁷Pr

Reaction #	¹⁷⁰Er(n,x)¹⁴⁸Pr	¹⁷⁰Er(n,x)¹⁴⁹Pr	¹⁷⁰Er(n,x)¹⁵⁰Pr	¹⁷⁰Er(n,x)¹⁵¹Pr	¹⁷⁰Er(n,x)¹⁵²Pr	¹⁷⁰Er(n,x)¹⁵³Pr

Reaction #	¹⁷⁰Er(n,x)¹³¹Nd	¹⁷⁰Er(n,x)¹³²Nd	¹⁷⁰Er(n,x)¹³³Nd	¹⁷⁰Er(n,x)¹³⁴Nd	¹⁷⁰Er(n,x)¹³⁵Nd	¹⁷⁰Er(n,x)¹³⁶Nd

Reaction #	¹⁷⁰Er(n,x)¹³⁷Nd	¹⁷⁰Er(n,x)¹³⁸Nd	¹⁷⁰Er(n,x)¹³⁹Nd	¹⁷⁰Er(n,x)¹⁴⁰Nd	¹⁷⁰Er(n,x)¹⁴¹Nd	¹⁷⁰Er(n,x)¹⁴²Nd

Reaction #	¹⁷⁰Er(n,x)¹⁴³Nd	¹⁷⁰Er(n,x)¹⁴⁴Nd	¹⁷⁰Er(n,x)¹⁴⁵Nd	¹⁷⁰Er(n,x)¹⁴⁶Nd	¹⁷⁰Er(n,x)¹⁴⁷Nd	¹⁷⁰Er(n,x)¹⁴⁸Nd

Reaction #	¹⁷⁰Er(n,x)¹⁴⁹Nd	¹⁷⁰Er(n,x)¹⁵⁰Nd	¹⁷⁰Er(n,x)¹⁵¹Nd	¹⁷⁰Er(n,x)¹⁵²Nd	¹⁷⁰Er(n,x)¹⁵³Nd	¹⁷⁰Er(n,x)¹⁵⁴Nd

Reaction #	¹⁷⁰Er(n,x)¹⁵⁵Nd	¹⁷⁰Er(n,x)¹⁵⁶Nd	¹⁷⁰Er(n,x)¹⁵⁷Nd	¹⁷⁰Er(n,x)¹⁵⁸Nd	¹⁷⁰Er(n,x)¹⁵⁹Nd	¹⁷⁰Er(n,x)¹³³Pm

Reaction #	¹⁷⁰Er(n,x)¹³⁴Pm	¹⁷⁰Er(n,x)¹³⁵Pm	¹⁷⁰Er(n,x)¹³⁶Pm	¹⁷⁰Er(n,x)¹³⁷Pm	¹⁷⁰Er(n,x)¹³⁸Pm	¹⁷⁰Er(n,x)¹³⁹Pm

Reaction #	¹⁷⁰Er(n,x)¹⁴⁰Pm	¹⁷⁰Er(n,x)¹⁴¹Pm	¹⁷⁰Er(n,x)¹⁴²Pm	¹⁷⁰Er(n,x)¹⁴³Pm	¹⁷⁰Er(n,x)¹⁴⁴Pm	¹⁷⁰Er(n,x)¹⁴⁵Pm

Reaction #	¹⁷⁰Er(n,x)¹⁴⁶Pm	¹⁷⁰Er(n,x)¹⁴⁷Pm	¹⁷⁰Er(n,x)¹⁴⁸Pm	¹⁷⁰Er(n,x)¹⁴⁹Pm	¹⁷⁰Er(n,x)¹⁵⁰Pm	¹⁷⁰Er(n,x)¹⁵¹Pm

Reaction #	¹⁷⁰Er(n,x)^152gPm			¹⁷⁰Er(n,x)¹⁵²Pm	¹⁷⁰Er(n,x)¹⁵³Pm	¹⁷⁰Er(n,x)^154gPm

Reaction #	¹⁷⁰Er(n,x)^154mPm	¹⁷⁰Er(n,x)¹⁵⁴Pm	¹⁷⁰Er(n,x)¹⁵⁵Pm	¹⁷⁰Er(n,x)^156gPm	¹⁷⁰Er(n,x)¹⁵⁶ⁿPm	¹⁷⁰Er(n,x)¹⁵⁶Pm

Reaction #	¹⁷⁰Er(n,x)¹⁵⁷Pm	¹⁷⁰Er(n,x)¹⁵⁸Pm	¹⁷⁰Er(n,x)¹⁵⁹Pm	¹⁷⁰Er(n,x)¹⁶⁰Pm	¹⁷⁰Er(n,x)¹⁶¹Pm	¹⁷⁰Er(n,x)¹⁶²Pm

Reaction #	¹⁷⁰Er(n,x)¹³⁵Sm	¹⁷⁰Er(n,x)¹³⁶Sm	¹⁷⁰Er(n,x)¹³⁷Sm	¹⁷⁰Er(n,x)¹³⁸Sm	¹⁷⁰Er(n,x)¹³⁹Sm	¹⁷⁰Er(n,x)¹⁴⁰Sm

Reaction #	¹⁷⁰Er(n,x)¹⁴¹Sm	¹⁷⁰Er(n,x)¹⁴²Sm	¹⁷⁰Er(n,x)¹⁴³Sm	¹⁷⁰Er(n,x)¹⁴⁴Sm	¹⁷⁰Er(n,x)¹⁴⁵Sm	¹⁷⁰Er(n,x)¹⁴⁶Sm

Reaction #	¹⁷⁰Er(n,x)¹⁴⁷Sm	¹⁷⁰Er(n,x)¹⁴⁸Sm	¹⁷⁰Er(n,x)¹⁴⁹Sm	¹⁷⁰Er(n,x)¹⁵⁰Sm	¹⁷⁰Er(n,x)¹⁵¹Sm	¹⁷⁰Er(n,x)¹⁵²Sm

Reaction #	¹⁷⁰Er(n,x)¹⁵³Sm	¹⁷⁰Er(n,x)¹⁵⁴Sm	¹⁷⁰Er(n,x)¹⁵⁵Sm	¹⁷⁰Er(n,x)¹⁵⁶Sm	¹⁷⁰Er(n,x)¹⁵⁷Sm	¹⁷⁰Er(n,x)¹⁵⁸Sm

Reaction #	¹⁷⁰Er(n,x)¹⁵⁹Sm	¹⁷⁰Er(n,x)¹⁶⁰Sm	¹⁷⁰Er(n,x)¹⁶¹Sm	¹⁷⁰Er(n,x)¹⁶²Sm	¹⁷⁰Er(n,x)¹⁶³Sm	¹⁷⁰Er(n,x)¹⁶⁴Sm

Reaction #	¹⁷⁰Er(n,x)¹⁶⁵Sm	¹⁷⁰Er(n,x)¹³⁷Eu	¹⁷⁰Er(n,x)¹³⁸Eu	¹⁷⁰Er(n,x)¹³⁹Eu	¹⁷⁰Er(n,x)¹⁴⁰Eu	¹⁷⁰Er(n,x)¹⁴¹Eu

Reaction #	¹⁷⁰Er(n,x)¹⁴²Eu	¹⁷⁰Er(n,x)¹⁴³Eu	¹⁷⁰Er(n,x)¹⁴⁴Eu	¹⁷⁰Er(n,x)¹⁴⁵Eu	¹⁷⁰Er(n,x)¹⁴⁶Eu	¹⁷⁰Er(n,x)¹⁴⁷Eu

Reaction #	¹⁷⁰Er(n,x)¹⁴⁸Eu	¹⁷⁰Er(n,x)¹⁴⁹Eu	¹⁷⁰Er(n,x)¹⁵⁰Eu	¹⁷⁰Er(n,x)¹⁵¹Eu	¹⁷⁰Er(n,x)^152gEu	¹⁷⁰Er(n,x)^152mEu

Reaction #		¹⁷⁰Er(n,x)¹⁵²Eu	¹⁷⁰Er(n,x)¹⁵³Eu	¹⁷⁰Er(n,x)^154gEu		¹⁷⁰Er(n,x)¹⁵⁴Eu

Reaction #	¹⁷⁰Er(n,x)¹⁵⁵Eu	¹⁷⁰Er(n,x)¹⁵⁶Eu	¹⁷⁰Er(n,x)¹⁵⁷Eu	¹⁷⁰Er(n,x)¹⁵⁸Eu	¹⁷⁰Er(n,x)¹⁵⁹Eu	¹⁷⁰Er(n,x)¹⁶⁰Eu

Reaction #	¹⁷⁰Er(n,x)¹⁶¹Eu	¹⁷⁰Er(n,x)¹⁶²Eu	¹⁷⁰Er(n,x)¹⁶³Eu	¹⁷⁰Er(n,x)¹⁶⁴Eu	¹⁷⁰Er(n,x)¹⁶⁵Eu	¹⁷⁰Er(n,x)¹⁶⁶Eu

Reaction #	¹⁷⁰Er(n,x)¹³⁹Gd	¹⁷⁰Er(n,x)¹⁴⁰Gd	¹⁷⁰Er(n,x)¹⁴¹Gd	¹⁷⁰Er(n,x)¹⁴²Gd	¹⁷⁰Er(n,x)¹⁴³Gd	¹⁷⁰Er(n,x)¹⁴⁴Gd

Reaction #	¹⁷⁰Er(n,x)¹⁴⁵Gd	¹⁷⁰Er(n,x)¹⁴⁶Gd	¹⁷⁰Er(n,x)¹⁴⁷Gd	¹⁷⁰Er(n,x)¹⁴⁸Gd	¹⁷⁰Er(n,x)¹⁴⁹Gd	¹⁷⁰Er(n,x)¹⁵⁰Gd

Reaction #	¹⁷⁰Er(n,x)¹⁵¹Gd	¹⁷⁰Er(n,x)¹⁵²Gd	¹⁷⁰Er(n,x)¹⁵³Gd	¹⁷⁰Er(n,x)¹⁵⁴Gd	¹⁷⁰Er(n,x)¹⁵⁵Gd	¹⁷⁰Er(n,x)¹⁵⁶Gd

Reaction #	¹⁷⁰Er(n,x)¹⁵⁷Gd	¹⁷⁰Er(n,x)¹⁵⁸Gd	¹⁷⁰Er(n,x)¹⁵⁹Gd	¹⁷⁰Er(n,x)¹⁶⁰Gd	¹⁷⁰Er(n,x)¹⁶¹Gd	¹⁷⁰Er(n,x)¹⁶²Gd

Reaction #	¹⁷⁰Er(n,x)¹⁶³Gd	¹⁷⁰Er(n,x)¹⁶⁴Gd	¹⁷⁰Er(n,x)¹⁶⁵Gd	¹⁷⁰Er(n,x)¹⁶⁶Gd	¹⁷⁰Er(n,x)¹⁶⁷Gd	¹⁷⁰Er(n,x)¹⁴²Tb

Reaction #	¹⁷⁰Er(n,x)¹⁴³Tb	¹⁷⁰Er(n,x)¹⁴⁴Tb	¹⁷⁰Er(n,x)¹⁴⁵Tb	¹⁷⁰Er(n,x)¹⁴⁶Tb	¹⁷⁰Er(n,x)¹⁴⁷Tb	¹⁷⁰Er(n,x)¹⁴⁸Tb

Reaction #	¹⁷⁰Er(n,x)¹⁴⁹Tb	¹⁷⁰Er(n,x)¹⁵⁰Tb	¹⁷⁰Er(n,x)¹⁵¹Tb	¹⁷⁰Er(n,x)^152gTb		¹⁷⁰Er(n,x)¹⁵²Tb

Reaction #	¹⁷⁰Er(n,x)¹⁵³Tb	¹⁷⁰Er(n,x)^154gTb	¹⁷⁰Er(n,x)^154mTb	¹⁷⁰Er(n,x)¹⁵⁴ⁿTb	¹⁷⁰Er(n,x)¹⁵⁴Tb	¹⁷⁰Er(n,x)¹⁵⁵Tb

Reaction #	¹⁷⁰Er(n,x)^156gTb	¹⁷⁰Er(n,x)^156oTb		¹⁷⁰Er(n,x)¹⁵⁶Tb	¹⁷⁰Er(n,x)¹⁵⁷Tb	¹⁷⁰Er(n,x)^158gTb

Reaction #	¹⁷⁰Er(n,x)^158oTb	¹⁷⁰Er(n,x)¹⁵⁸Tb	¹⁷⁰Er(n,x)¹⁵⁹Tb	¹⁷⁰Er(n,x)¹⁶⁰Tb	¹⁷⁰Er(n,x)¹⁶¹Tb	¹⁷⁰Er(n,x)¹⁶²Tb

Reaction #	¹⁷⁰Er(n,x)¹⁶³Tb	¹⁷⁰Er(n,x)¹⁶⁴Tb	¹⁷⁰Er(n,x)¹⁶⁵Tb	¹⁷⁰Er(n,x)¹⁶⁶Tb	¹⁷⁰Er(n,x)¹⁶⁷Tb	¹⁷⁰Er(n,x)¹⁶⁸Tb

Reaction #	¹⁷⁰Er(n,x)¹⁴³Dy	¹⁷⁰Er(n,x)¹⁴⁴Dy	¹⁷⁰Er(n,x)¹⁴⁵Dy	¹⁷⁰Er(n,x)¹⁴⁶Dy	¹⁷⁰Er(n,x)¹⁴⁷Dy	¹⁷⁰Er(n,x)¹⁴⁸Dy

Reaction #	¹⁷⁰Er(n,x)¹⁴⁹Dy	¹⁷⁰Er(n,x)¹⁵⁰Dy	¹⁷⁰Er(n,x)¹⁵¹Dy	¹⁷⁰Er(n,x)¹⁵²Dy	¹⁷⁰Er(n,x)¹⁵³Dy	¹⁷⁰Er(n,x)¹⁵⁴Dy

Reaction #	¹⁷⁰Er(n,x)¹⁵⁵Dy	¹⁷⁰Er(n,x)¹⁵⁶Dy	¹⁷⁰Er(n,x)¹⁵⁷Dy	¹⁷⁰Er(n,x)¹⁵⁸Dy	¹⁷⁰Er(n,x)¹⁵⁹Dy	¹⁷⁰Er(n,x)¹⁶⁰Dy

Reaction #	¹⁷⁰Er(n,x)¹⁶¹Dy	¹⁷⁰Er(n,x)¹⁶²Dy	¹⁷⁰Er(n,x)¹⁶³Dy	¹⁷⁰Er(n,x)¹⁶⁴Dy	¹⁷⁰Er(n,x)^165gDy	¹⁷⁰Er(n,x)¹⁶⁵ⁿDy

Reaction #	¹⁷⁰Er(n,x)¹⁶⁵Dy	¹⁷⁰Er(n,x)¹⁶⁶Dy	¹⁷⁰Er(n,x)¹⁶⁷Dy	¹⁷⁰Er(n,x)¹⁶⁸Dy	¹⁷⁰Er(n,x)¹⁶⁹Dy	¹⁷⁰Er(n,x)¹⁴⁶Ho

Reaction #	¹⁷⁰Er(n,x)¹⁴⁷Ho	¹⁷⁰Er(n,x)¹⁴⁸Ho	¹⁷⁰Er(n,x)¹⁴⁹Ho	¹⁷⁰Er(n,x)¹⁵⁰Ho	¹⁷⁰Er(n,x)^151gHo	¹⁷⁰Er(n,x)^151mHo

Reaction #	¹⁷⁰Er(n,x)¹⁵¹Ho	¹⁷⁰Er(n,x)^152gHo	¹⁷⁰Er(n,x)^152mHo	¹⁷⁰Er(n,x)¹⁵²Ho	¹⁷⁰Er(n,x)^153gHo	¹⁷⁰Er(n,x)^153mHo

Reaction #	¹⁷⁰Er(n,x)¹⁵³Ho	¹⁷⁰Er(n,x)^154gHo	¹⁷⁰Er(n,x)¹⁵⁴ⁿHo	¹⁷⁰Er(n,x)¹⁵⁴Ho	¹⁷⁰Er(n,x)¹⁵⁵Ho	¹⁷⁰Er(n,x)^156gHo

Reaction #	¹⁷⁰Er(n,x)^156mHo		¹⁷⁰Er(n,x)¹⁵⁶Ho	¹⁷⁰Er(n,x)¹⁵⁷Ho	¹⁷⁰Er(n,x)^158gHo	¹⁷⁰Er(n,x)^158mHo

Reaction #		¹⁷⁰Er(n,x)¹⁵⁸Ho	¹⁷⁰Er(n,x)^159gHo	¹⁷⁰Er(n,x)^159oHo	¹⁷⁰Er(n,x)¹⁵⁹Ho	¹⁷⁰Er(n,x)^160gHo

Reaction #	¹⁷⁰Er(n,x)^160mHo		¹⁷⁰Er(n,x)¹⁶⁰Ho	¹⁷⁰Er(n,x)^161gHo	¹⁷⁰Er(n,x)¹⁶¹ⁿHo	¹⁷⁰Er(n,x)¹⁶¹Ho

Reaction #	¹⁷⁰Er(n,x)^162gHo	¹⁷⁰Er(n,x)^162oHo	¹⁷⁰Er(n,x)¹⁶²Ho	¹⁷⁰Er(n,x)^163gHo	¹⁷⁰Er(n,x)^163oHo	¹⁷⁰Er(n,x)¹⁶³Ho

Reaction #	¹⁷⁰Er(n,x)^164gHo	¹⁷⁰Er(n,x)^164oHo	¹⁷⁰Er(n,x)¹⁶⁴Ho	¹⁷⁰Er(n,x)¹⁶⁵Ho	¹⁷⁰Er(n,x)^166gHo	¹⁷⁰Er(n,x)^166mHo

Reaction #	¹⁷⁰Er(n,x)¹⁶⁶Ho	¹⁷⁰Er(n,x)¹⁶⁷Ho	¹⁷⁰Er(n,x)^168gHo	¹⁷⁰Er(n,x)^168mHo	¹⁷⁰Er(n,x)¹⁶⁸Ho	¹⁷⁰Er(n,x)¹⁶⁹Ho

Reaction #	¹⁷⁰Er(n,x)^170gHo	¹⁷⁰Er(n,x)^170mHo	¹⁷⁰Er(n,x)¹⁷⁰Ho	¹⁷⁰Er(n,x)¹⁴⁸Er	¹⁷⁰Er(n,x)¹⁴⁹Er	¹⁷⁰Er(n,x)¹⁵⁰Er

Reaction #	¹⁷⁰Er(n,x)^151gEr		¹⁷⁰Er(n,x)¹⁵¹Er	¹⁷⁰Er(n,x)¹⁵²Er	¹⁷⁰Er(n,x)¹⁵³Er	¹⁷⁰Er(n,x)¹⁵⁴Er

Reaction #	¹⁷⁰Er(n,x)¹⁵⁵Er	¹⁷⁰Er(n,x)¹⁵⁶Er	¹⁷⁰Er(n,x)¹⁵⁷Er	¹⁷⁰Er(n,x)¹⁵⁸Er	¹⁷⁰Er(n,x)¹⁵⁹Er	¹⁷⁰Er(n,x)¹⁶⁰Er

Reaction #	¹⁷⁰Er(n,x)¹⁶¹Er	¹⁷⁰Er(n,x)¹⁶²Er	¹⁷⁰Er(n,x)¹⁶³Er	¹⁷⁰Er(n,x)¹⁶⁴Er	¹⁷⁰Er(n,x)¹⁶⁵Er	¹⁷⁰Er(n,x)¹⁶⁶Er

Reaction #	¹⁷⁰Er(n,x)^167gEr	¹⁷⁰Er(n,x)^167oEr	¹⁷⁰Er(n,x)¹⁶⁷Er	¹⁷⁰Er(n,x)¹⁶⁸Er	¹⁷⁰Er(n,x)¹⁶⁹Er	¹⁷⁰Er(n,x)¹⁷⁰Er

Reaction #	¹⁷⁰Er(n,x)¹⁷¹Er